Home / 18,513.21-25,548.15-10,015.32

Finding the Fourth Proportional to 18,513.21, 25,548.15 and 10,015.32

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Solution

The fourth proportional to 18,513.21, 25,548.15 and 10,015.32 is: 13,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.21 : 25,548.15 = 10,015.32 : x
  2. Step 2: Convert to fraction form
    18,513.21/25,548.15 = 10,015.32/x
  3. Step 3: Cross multiply
    18,513.21x = 25,548.15 × 10,015.32
  4. Step 4: Simplify right side
    18,513.21x = 255,872,897.66
  5. Step 5: Solve for x
    x = 255,872,897.66/18,513.21
  6. Step 6: Final answer
    x = 13,821.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.